You cannot directly convert PS2 game discs or files into a PC-executable format. The PlayStation 2 uses a custom MIPS-based "Emotion Engine" processor and proprietary architecture fundamentally incompatible with PC's x86/x64 architecture. Game code is compiled specifically for PS2 hardware and cannot be natively executed on Windows, macOS, or Linux.
PCSX2 is the leading PS2 emulator for PC. It requires:
Recommendation: For the best experience, buy native PC ports or remasters. For preservation or playing unported titles, use PCSX2 with your own legally dumped games.